The enemy, reckoned at about 6000 Dayaks and 500 Malays, had retired up-river, and against them a small force of about 40 blue-jackets and the same number of Malays, under the Rajah and Lieutenant Horton, started the next day. During the night they were repeatedly attacked by the pirates, who, under cover of the darkness, closed in on their assailants, especially where some marines held a post on a cleared height overlooking the river. The pirates lost a good many men, and the next morning, seeing the force again preparing to advance, sent in a flag of truce and sued for mercy. The Rajah then met their chiefs and explained to them that it was in consequence of their acts of piracy that they were now punished; that they had been cautioned two years previously to abstain from these marauding expeditions, and that they had disregarded this monition; he assured them that they would be unmolested if they abstained from molesting others, but that if they continued to prey on their neighbours and to interfere with trading vessels they would receive further castigation.
It was proposed to these people that the towns of Paku and Rembas should be spared, if they would guarantee the future good conduct of the inhabitants. They coolly replied that those people deserved the same punishment, which had better be administered, otherwise they would continue pirating, and would lead the Padi people astray again.
Paku was taken on the 14th, and burnt; here no resistance was met with. The next day the chiefs submitted. On the 17th, Rembas was attacked and taken, the Balau Dayaks, under Sherip Japar, having all the fighting to do. This was the largest and strongest town, and much plunder was secured. After receiving the submission of the Rembas chiefs the expedition returned to Kuching, having, in seven days, destroyed the strongholds of the most powerful and dreaded pirates on the north-west coast of Borneo, who for years had defied both Bruni and Sarawak. Such an impression was produced, that the Sekrangs sent messages promising to abstain from piracy, and offering, if they were spared, to give up a hundred women and children captives; and Sherips Mular and Sahap, fearing the punishment they so richly deserved, sent professions of future good conduct. These were not accepted, but the day of reckoning had to be deferred, for Keppel had received orders to return to China.